The Great Atlantic Sargassum Belt has been growing since 2011, dumping an increasing amount of seaweed along coastlines in the Caribbean and Gulf of Mexico. https://to.pbs.org/4w1z4SE

Huge blankets of seaweed are smothering coastlines from the Caribbean to MexicoSome 27 million metric tons of self-sustaining sargassum have been recorded in the Atlantic, Caribbean and Gulf of Mexico in July, according to a report released Friday by the University of South Flor...to.pbs.org